MT-1620 Fall 2002 Figure 15.5 Idealization of space habitat semi- monocoque construction Outer skin and walls are assumed to carry only shear stress oxs Flanges and stiffeners are assumed to carry only axial stress o Analyze these cross-sections as a beam under combined bending, shear, and torsion Utilize st. Venant assumptions 1. There are enough closely spaced rigid ribs to preserve the shape of the cross-section (or enough stiffness in the internal bracing to do such 2. The cross-sections are free to warp out-of-plane Start to develop the basic equations by looking at the most basic case Paul A Lagace @2001 Unit 15-6MIT - 16.20 Fall, 2002 Figure 15.5 Idealization of space habitat semi-monocoque construction → Outer skin and walls are assumed to carry only shear stress σxs → Flanges and stiffeners are assumed to carry only axial stress σxx Analyze these cross-sections as a beam under combined bending, shear, and torsion. Utilize St. Venant assumptions: 1. There are enough closely spaced rigid ribs to preserve the shape of the cross-section (or enough stiffness in the internal bracing to do such) 2. The cross-sections are free to warp out-of-plane Start to develop the basic equations by looking at the most basic case: Paul A. Lagace © 2001 Unit 15 - 6